Fuel-governor for oil-burners.



J. C. AUCKLAND & E. P. HILDEBRAND.

FUEL GOVERNOR FOR OIL BURNERS.

APPLICATION FILED MAY 15, l9l6.

Patented J nne 26, 1917.

2 SHEETS-SHEET I.

@QQ attmmmg J. C. AUCKLAND & E. P. HILDEBRAND.

FUEL GOVERNOR FOR OIL BURNERS.

APPLICATION FILED MAY 15, I916.

7 H 6a a; 2n n g 6 ad E Z Jm [J 2 mm MW/w m m @A WN P ad Md dz 1 B JOHN C. AUCKLAND AND EDWARD P. HILDEBBAND, 0F SEATTLE. WASHINGTON.

FUEL-GOVERNOR FOR OILBURNERS.

Application filed May 15, 1916.

To all whom it may concern:

Be it known that we, JOHN G. AUCKLAND and EDWARD P. HILDEBRAND, citizens of the United States, and residents of the city of Seattle, county of King, and State of Washington, have invented certain new and useful Improvements in Fuel-Governors for Oil-Burners, of which the following is a specification.

Our invention relates to a device designed to automatically control the flow of oil and steam to an oil burner by the pressure of the steam in the boiler. o have therefore called this an oil fuel governor.

The object of our invention is to provide an automatically operating means by which the supply of oil fuel to the burner and of the steam, air, or other means for atomizing the same, may be automatically controlled in accordance with therise and fall of pressure in the boiler.

Our object further is to construct a device of this sort which shall be more perfect and reliable in its action than preceding devices which have been used and one which is also sensitive to small variations in boiler pressure and which is thoroughly dependable in its action. Our object is further to produce a device of this character which is capable of being adjusted, as between the oil and the steam controllingvalves, to obtain proper proportions between these for different relative pressures of the two. Other objects will be seen from an inspection of the specifications and the claims following hereinafter.

.The peculiar features of our invention which are novel, will be hereinafter described and then pointed out in the claims terminating these specifications.

In the accompanying drawings We have shown our invention embodied in a type of construction which is that 'now'most preferredbyus.

Figure 1 is a centrallongitudinal section through thepactuating piston and the valves controlled thereby.

Fig. 2 isa section taken upon the line 22 of Fig. 1.

Fig. 3 shows atop plan at one side of which the cap has been cut away upon a diametrical line to thereby show the parts immediately beneath this cap.

Specification of Letters Patent.

Patented June 26, 1917.

Serial No. 97,491.

Fig. 4 is a section takenv on line 4-4 of V Fig. 1.

Fig. 5 is a section taken on line 55 of Fig. 1. Fig. 6 is a longitudinal section and Fig.

to snuglyreceive a piston member 2, which piston member 1s hollowed and receives the controlling spring 3. The casing is provided with a hollow boss 10 at the lower and bottom end of the piston receiving chamber, to which is connected pipe 11 whereby steam from the boiler may be admitted beneath the piston.

' The upper end. of the main casing member 1 is closed by a cap 4. Between this cap and the lower end of the piston-is placed a spring 3 which is selected of such strength as will properly resist the pressure to which the governor is expected to be subjected. The size and strength of this spring would vary somewhat as between situations where a lightfor a relatively heavy boiler pressure were employed.

For the purpose of adjusting the tension of the spring to correspond with reasonable variation of boiler pressure, an adjusting bolt 40 is provided, which is threaded through the upper surface of the cap and bears upon a washer 41 against which the spring is seated.

At each side of thepiston chamber is formed two valve receiving chambers, in each of which is placed an axially reciprocating piston valve. These valves 5 are in the shape of round rods which, at a point toward the middle of their length are cut down to small stems 50, thus providing a channel which serves as a port to provide a vpassage for fluids through the valve. At

their upper ends they are further out down to form necks 51 which fit Within notches '20,

formed in a flange 21, which extends outward from the upper end of the piston 2. In this manner the valves 5 are connected to move with the piston in its reciprocating movement. 7

Between each of the valves 5 and the casing is interposed a sleeve 6, the same being separately shown in Fig. 8. This sleeve is fixed against longitudinal movement but is capable of rotative movement. This sleeve 6 is provided on its upper end with a gear 60, which projects slightly beyond the outer periphery of the sleeve. The casing is recessed in its upper surface to accommodate this gear bringing the upper surface of the gear flush with or enough below the surface of the casing to permit free turning of the gear. The flange of the cap prevents the gear and sleeve rising. I

The sleeve 6 is provided with two ports 61, located at opposite sides thereof, through which the fluid may pass, these registering with the cutaway portion of the valve to form a port through both sleeve and valve. These ports connect with ports 52 formed in the casing proper. These ports 52 con nect with the hollow bosses with which are connected pipes 53, said pipes being connected up with either the steam'supply or the oil supply, as the case may be. Two of these valves are provided, one at each side of the device, one being intended for the control of the steam and the other for control of the oil, it being immaterial which is being used for the purpose, and also whether the flow be in one direction or the other.

In conjunction with the sleeve 6 a pinion 62, mounted upon a shaft 63 is employed, said shaft 63 being journaled in the cap 4 and being provided with a square upper end 64. This cap is recessed in its upper portion to form an inclosing chamber receiving the upper shaft 63 and normally closed by a hollow threaded cap 65. The upper end of this cap is preferably made in the outline of a nut so that it may be readily loosened or tightened. By removing one of these caps and placing a key upon the square end of the shaft 63 it may be turned and with it the sleeve 6 may be turned, thereby more or less throttling the effective area of the ports in the sleeve and in this way controlling the amount of fluid which will flow through this valve for any given pressure.

In Fig. 4 one of the valves is shown centrally or symmetrically placed, while the other is shown turned slightly from a central position, the latter being positioned to somewhat throttle the flow. Each valve may be adjusted independent of the other. It is therefore possible to adjust the device for use with high steam pressure and low oil pressure, or two pressures which are substantially equal as between steam and oil.

Adjustments for differences of this sort is secured by rotative adjustment of the sleeve. Adjustments as required to compensate for fluctuation in steam pressure in the boiler are cared for by the reciprocative movement of the piston.

We have shown the lower ends of each of the valve chambers 55 as connected with a port 7 and each of these ports 7 connected with a transversely extending port 7 0 and this in turn connects with the space at the upper side of the piston through a vertical port 71. These various ports serve as drainage ports for the saaces in the casing and drain through pipe 2 to a discharge in the burner or to any other convenient point.

We have shown a set screw 8 which passes through the cap 4 in position to engage the top surface of the flange 21 of the piston to prevent its rising above a certain point. In this way the entire closing of the ports by valves 5 under influence of the piston 2 may be prevented. This prevents an entire ex tinguishing of the fires by a sudden rise of pressure in the boilers, maintaining a small pilot flame which will start the fire going at its normal rate as soon as the pressure drops. Without some provision of this-kind it would be possible for a sudden increase of boiler pressure to cause an entire extinguishment of the fire, whereupon a dropping of the pressure would start feeding of the oil through the burner which would be very likely to cause damage.

The operation of the governor is believed to be apparent from the above and to not need further explanation here.

What -we claim as our invention is;

1. A fuel feed governor comprising a casing having a steam cylinder bore and two parallel valve receiving bores alongside, the steam cylinder bore having a steam supply connection with one end and the valve receiving bores having transversely extending ports intersecting therewith, a sleeve mounted in each of the valve receiving bores and having ports in opposite sides registering with the ports of the casing, means for turning said sleeves upon their axes, valves mounted in said sleeves for axial movement, a piston mounted in the steam cylinder, a spring acting to move the piston in opposition to the steam acting thereon, said piston and the valves having interlocking engagement to secure common movement.

2. A fuel feed governor comprising a casing having a steam cylinder bore and two parallel valve receiving bores alongside, a

steam supply connection with thebottom of the steam cylinder bore, the casing having steam and oil ports, each intersecting its respective one of said valve receiving bores,

a sleeve fitting each of said valve receiving bores and having ports at opposite sides adapted to register with the intersecting ports of the casing, means for manually and separately turning said sleeves upon their axis to regulate their efi'ective port areas, an axially movable piston valve mounted in each sleeve and having a reduced section registering with the ports in the sleeve, a piston in the cylinder bore, a spring acting upon the piston in opposition to the steam, the piston having lateral projections provided with notches and the valves having necks fitting in said notches.

3. A fuel feed governor, comprising a casing having a steam cylinder bore, two parallel valve receiving bores alongside, and oil and steam ports each intersecting its respective valve receiving chamber, a sleeve in each valve receiving chamber having ports in opposite sides registering with the ports in the casing, a piston in the cylinder bore, the casing having a steam port connecting with the bottom of the cylinder bore, a spring acting on said piston in opposition to the steam, a cap covering the open ends of said cylinder and valve receiving bores, the piston and the valves having interlocking engagement for axial movement, the valve sleeves having gear teeth thereon, and gears mounted on the casing and engaging said sleeves to turn them to thereby vary the effective area of the valve ports.

4. A fuel oil feed governor, comprising a casing having a cylinder bore and two parallel valve receiving bores alongside the cylinder bore and all opening to the same face of the casing, the casing having oil and steam ports each intersecting its respective valve receiving bore, and a steam supply port connecting with the bottom of the cylinder bore, a piston in the cylinder bore and having lateral projections extending over the valve receiving bores, a sleeve in each valve receiving bore having ports in opposite sides registering with the intersecting ports of said bores, means for manually and separately turning said sleeves to vary the effective areas of its ports, a piston valve fitting said sleeves and having a necked section registering with said ports, the outer ends of said valves having connection with the piston for like reciprocating movement, a cap covering said piston and valves, and provided with openings and removable closures therefor for use in adjusting the valve sleeves, and a spring engaging the cap and the piston in opposition to the steam pressure.

Signed at Seattle, Washington, this ninth day of May, 1916.

JOHN G. AUCKLAND. EDWARD P. HILDEBRAND.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

